1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a7cc4881b3e02a0ee3fd21149941e4abab8870bcc9497a653a2498fdc207dc. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/159e2056-e6c8-417d-9fec-84ad69079fae.json and https://artists.proofprofile.net/proofs/artist/159e2056-e6c8-417d-9fec-84ad69079fae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0692e9bd987a7a1dacca1cd724418f68d2b6e91c6550f0c7ff01e8f65de2a04e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU7703924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836cb1307b62825588eb607ac5175889168d6536fa63cc2861f00de24f81383c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWS2198833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d790e21191c065ef9f9826e74baa9cd129269cf0a9addb0037854cac06d106. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82337710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c2584dc1f87a5a32ca41b1b39a7ea881207bcfdf72c875b1a7e9fc1c07550c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:09:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6N2380408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbb494d6b8cce8bc4b810283d757445b507f483ad353051a0f4e571bcf53773. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2398346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfe4c78ef33dbf209a9038c3c3a7675e6e56a4e4f8a4d6c161d169d1fad5bd3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2398348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82213c341fa855520957f838daaa5c52a441e5b3117f3670dd83f159baa61b3f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2398350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecaa2c4a24253875c6caceb7bb4b6552557e161fb66f3a4c5a27d5f7a2e4032. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2398352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5a76cb68aceebb56410b720a10d358da5e55583018495052e6fb7a30e8b2af. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:41:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2398355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef5170ca49bab7a6d4a97aa408c39e2a9674ebdbc6c40f9dea7028d682b5096. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2303378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a597c65cbdea410243dc705fc0e7adc087d882f4cc28b4f216f2602a5c086a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2375574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ccd95b7dec4b43fc96788a6e9bd149590e9ab4ad0b7f2dc98aa7bd0a908c9f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBC2389739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84ad1d985b4da9a28cd824758e7f9fc1c16fe74247d8bf723ae422ade3d4437. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN62426431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71541facfeca56517543b649dc399e4ace84672cd883c85e860e3fbc98da7247. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN62426432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9568562c4b0d30896082c25f2da0e2759e4e0c0eadd2c3906cb32c355524494d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN62426433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399830deeec7b4904680fd1d157c4d8210fe1bed8a7be355de8f6659786d034e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN62426439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609d20742e26b555e2557cc48dec940d39bfaab7bb7aff64a44a2861ade8996d. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHK2430524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612b4d07c572c99a4357083dc9411b4a815f7f9caf76f3a30eefddfabb744432. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82441341.